Hitech instrumentation [india] manufactures a pocket size portable surface roughness gauges which is ideal in tracing surface roughness measurements on a wide variety of surfaces. These portable surface roughness gauges find their applications in production, on the shop floor and in the laboratory. These portable surface roughness gauges are solidly constructed in durable cast aluminum housing to provide accurate, reliable surface finish gauging for a long time. These gauges can operate in horizontal, vertical and upside down position and are also accessible in even difficult to reach surfaces such as inside and outside diameters. The portable surface gauges come with four switchable probe positions which are axial [folded] or at 90º, 180º or 270º. These portable surface roughness gauges have an easy to read lcd to display the measured roughness value in microinches or micrometers.